Understanding how courts actually evaluate electronic signatures is far more valuable than reading the statute. Here are five landmark cases that shaped current enforcement standards.
What happened: An employee challenged an employer's arbitration agreement that was allegedly signed electronically during onboarding. The employee denied signing it.
The problem: The employer could not produce evidence showing who actually signed the document electronically. There was no unique login, no IP address captured, and no audit trail linking the specific employee to the specific signature event.
Ruling: The court held the e-signature was unenforceable because the employer failed to demonstrate the plaintiff was the person who signed.
Lesson: An e-signature without an audit trail that identifies the signer (IP address, device information, authentication method, timestamp) is essentially worthless in court.
What happened: Similar to Ruiz — an employer produced an electronically signed arbitration agreement. The employee disputed signing it.
The difference: This time, the employer demonstrated a detailed onboarding workflow: the employee received a unique login, was required to create a personal security question, navigated to the specific document, and clicked a "Sign" button. The system logged every step with timestamps.
Ruling: The court found the e-signature valid and enforceable. The detailed audit trail created a presumption that the employee signed.
Lesson: A documented signing ceremony with unique authentication and comprehensive logging creates a strong evidentiary foundation.
What happened: A shipowner sought to enforce a charter agreement that was negotiated and "signed" entirely via email. The counterparty argued there was no "signature" because nobody signed a physical document.
Ruling: The Court of Appeal held that a person's name typed at the end of an email constitutes an electronic signature if it authenticates the document and demonstrates an intention to be bound by its contents. The combination of the email exchanges and the typed names was sufficient.
Lesson: In English law, even a typed name in an email can be a legally binding signature — but this case also underscores risk: if either party had denied sending the emails, the outcome could have differed without proper server logs.
What happened: Sertant Capital signed a contract through DocuSign's platform, then attempted to void the contract by claiming the e-signature was invalid.
Ruling: The court affirmed the validity of the DocuSign signature, specifically citing the Certificate of Completion — a detailed record that included the signer's email, IP address, timestamps for every action (document opened, each page viewed, signature applied, document completed), and a hashed document fingerprint.
Lesson: E-signature platforms with comprehensive audit trail certificates provide court-admissible evidence that is extremely difficult to challenge.
What happened: A director guaranteed a company's debts via an email from his personal email address. The email did not include a typed name — the sender was identified only by the "From" field (the email address).
Ruling: The court held that an automatically generated email address in the "From" field is not a signature because it was not added by the sender with the intent to authenticate the document. A signature requires a deliberate act.
Lesson: Automatic identification (like a "From" email header) is not a signature. There must be a deliberate act demonstrating intent to sign.
Pattern from the cases: Courts consistently uphold e-signatures when there is (1) a clear signing ceremony, (2) unique signer authentication, and (3) a comprehensive, tamper-evident audit trail. They reject e-signatures when identity verification and audit trails are weak or absent.
This is exactly why purpose-built platforms matter. ZiaSign generates a court-admissible Certificate of Completion for every signed document — capturing signer identity, IP address, device fingerprint, authentication method, and a SHA-256 document hash — mirroring the exact evidence standard that courts have upheld in cases like Espejo and Docusign v. Sertant Capital.
